Lighting of corals

Jesse3979

Good afternoon. In one of the topics about lighting marine aquariums with LEDs, one of the forum members provided a link that included a graph of coral sunlight consumption at a depth of 5 meters, depending on the time of day. I know there are many similar graphs and tables, but I am specifically interested in the one where the X-axis represents the time of day and the Y-axis represents the solar spectrum in nm. Has anyone seen it? I would appreciate your help, please share the link. P.S. If, of course, this is not a terrible military secret among ice builders.

Samuel6138

Do corals "consume" different spectra depending on the time of day? Honestly, it's the first time I've heard this... Perhaps it refers to the change in spectrum at depth based on the time of day (more precisely, the angle of the sun above the horizon)? This does exist, and there is indeed a lot of information on the internet about it due to varying water composition, different distances from the equator, etc. In reality, this doesn't provide any practical benefits and doesn't affect coral growth or their coloration in any way. Unless it's interesting purely from a theoretical perspective. This was discussed here.

Brian

I apologize, I didn't express myself quite correctly. I saw your table, and there was a graph that looked roughly like this: 100 nm from 8:00 to 18:00, 200 nm from 9:30 to 17:00. I wrote the numbers approximately, otherwise, there might be another forum battle.